General TMs:
* Thunderbolt: Electric-type move with high power.
* Thunder: Electric-type move with high power and a chance to paralyze.
* Thunder Wave: Electric-type move that paralyzes the opponent.
* Quick Attack: Normal-type move with high priority.
* Volt Tackle: Electric-type move with high power but deals recoil damage.
* Iron Head: Steel-type move with high power.
* Brick Break: Fighting-type move that ignores Defense boosts.
* Signal Beam: Psychic-type move that ignores accuracy boosts.
* Shadow Claw: Ghost-type move that ignores Defense boosts.
* Hidden Power: A variable-type move with different power and type depending on Pikachu's individual stats.
Specific TMs:
* Light Screen: Psychic-type move that reduces the power of Special attacks.
* Reflect: Psychic-type move that reduces the power of Physical attacks.
* Substitute: Normal-type move that creates a substitute to take hits for Pikachu.
* Double Team: Normal-type move that raises Pikachu's evasion stat.
* Thunder Fang: Electric-type move that has a chance to paralyze the opponent.
Note: The availability of TMs can vary depending on the specific game and version.
To find out the exact TMs available to your Pikachu, check the game's official website or a reliable online guide.